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This article is about how to use collaborative programs to achieve cooperative multitasking in PHP. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

One of the better new features of PHP5.5 is the support for generators and collaborative programs. For the generator, PHP documentation and various other blog posts (like this one or this one) have been explained in great detail. Collaborative programs relatively receive less attention, so although collaborative programs have very powerful functions, they are difficult to know and difficult to explain.

Generator

The most basic idea of a generator is also a function whose return value is output in turn rather than a single value. Or, in other words, the generator makes it easier for you to implement the iterator interface. Here is a simple explanation by implementing a xrange function:

The code is as follows:

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